Just 5 weeks of brain training may protect against dementia for 20 years

A simple brain-training program that sharpens how quickly older adults process visual information may have a surprisingly powerful long-term payoff. In a major 20-year study of adults 65 and older, those who completed five to six weeks of adaptive speed of processing training - along with a few booster sessions - were significantly less likely to develop dementia, including Alzheimers disease, even two decades later. Participants who received the boosted speed training had a 25% lower dementia r...